  .gotop-btn {
    position: fixed;
    right: 1vw;
    bottom: 2vh;
    width: 35px;
    height: 35px;
    background-color: #942ffb;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow:
      0px 3px 5px -1px rgba(0, 0, 0, 0.2),
      0px 6px 10px 0px rgba(0, 0, 0, 0.14),
      0px 1px 18px 0px rgba(0, 0, 0, 0.12);
    opacity: 0.5;
    transition: all 0.2s ease-in-out;

    &:hover {
      opacity: 1;
    }

    .iconfont {
      display: inline-block;
      font-size: 18px;
      color: #ffffff;
    }
  }